Carton



M. THOMAS Sept. 5, 1950 CARTON Original Filed Oct. 22, 1947 I yenaf Malawi/Zie Imm? L? mi I;

for a, purpose tofbe explained later.

named sept. s, v195o CARTON Manville lhomas, Wausau, Wis., assignor to Marathon Corporation, Rothschild, Wis., a corporation of Wisconsin Original N0. 2,505,442, dated April 25, 1950, Serial No. 781.260, October 22,1947.

Application for reissue July '7, 1950,l Serial No. 172,569

v s Claims. (c1. 229-33) Matter enclosed in heavy brackets II l appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue This invention relates to a collapsible carton made preferably froma single' blank of cardboard and the like. More specifically the invention relates to a carton comprising a tray or receptacle portion provided with means for retaining and rigidifying same in set-up position.

Figure 1 is a plan view of theY inside surface of the blank from which the carton is formed;

Figure 2 is a perspective view of the set-up carton formed from the blank shown in Figure 1:

Figure 3 is a fragmental, perspective view illustrating in detail the manner in which the carton is locked and maintained in its Aupright position; and p Figure 4 is a vertical section taken along the line 4 4 of Figure 3.

For the purpose of illustrating the invention, there is shown in the accompanying drawings `a form thereof which is at present preferred, since the same has been found in practice to give satisfactory and reliable results, although it i's to be understood that the various instrumentalitiesloi which the invention consists can be variously arranged and organized and that the invention is not limited to the precise arrangements and organizations of the carton parts as herein shown and described.

Referring to the drawings, the carton is made from an integral blank of paper, cardboard or the like, suitably cut and scored as illustrated in Fig- -ure 1 to provide a foidable tray portion, indicated generally by the numeral 9, comprising a bottom wall IIl, a front wall Il, a rear wall I2 and side walls I3 hingedly connected to each other by score lines I4 and I5. The bottom wall is provided with three spaced ridges 31, 38 and 38' at opposite sides for a purpose to be hereinafter explained. It will also be noted that score lines I5 are interrupted for a short length at I6 Side walls I3 are provided with integrally hinged aps I'I which are glued to the rear wall I2 at the areas I1'. The side walls I3 are also provided with diagonal intersecting score lines I8 and I9 to permit collapsing of the tray portion 9 into fiat folded position and to provide triangular glue segments 2D. The front wall Il is provided with retaining flaps 2I portions of whichare adapted to be overlapped and glued to the triangular glue segments ZI'I` of side Walls I3 to constitute the soicalled Beers-type flaps. When the tray portion 9 is set up from its flat collapsed position to the position shown in Figure2, the free portions of flaps 2| will slide over the bottom wall IU until the lower edge portions 22 are frctionally engaged in the wells 35 which automatically form when the carton is set up as will be explained hereinafter. The tray portion 9 will be retained and rigidifled in its fully set up condition for receiving goods to be` packaged therein.

The front wall II of the tray portion 9 is provided at its upper edge with an externally folded locking flap 23 integrally hinged to the front wall, as illustrated in Figures 1, 2 and 3. The flap 23 is preferably hinged to the wall II along a score line 24 at the upper edge of the wall II so that when the flap 23 is bent back it has a tendency to spring outwardly. The locking flap 23 is cut to provide diagonally disposed edges 23. The locking flap 23 is adapted to engage and lock with coacting portions on a hinged cover portion, indicated generally by the numeral 25 in Figure 2.

The cover portion 25 which is hinged to the tray portion 9 by a score line 2G, comprises a top Wall 21, side Walls 23 and a front wall 29, hingedly connected by score lines 30 and 3l. The side walls 28 are provided with integrally hinged flap's 32 which are adhered to the areas 32' of the front wall 29 of the cover. Also, the side Walls 28 are each provided with a diagonal sc ore line 28' which permits collapsing the cover 25 to flat condition. The flaps 32 are recessed or cut alone' lines 33 and 34 to provide a substantially L-shaped recessed portion which is adapted for receiving and retaining mating portions of the locking flap 23 in snug engagement. The abutment edges 33 and 34 are arranged so as tovabut with and engage the adjacent free abutment edge portions 23' of the locking flap 23. When the cover' of the set-up carton is placed in closed position, the tendency ofthe flap 23 to spring outwardly on `its hinge line 24 insures positive engagementrand locking of the ends 23 of the flap 23 with the recessed portions provided in the front wall 29 of the cover. This construction insures retention and locking of the cover portion when it is placed in the closed position.

When goods are placed in the tray portion 9 of the set-up carton shown in Figure 2 andthe coverr 3 be readily reclosed and locked in closed position as often as may be desired.

The locking construction herein disclosed serves to retain the cover in locked position when the filled with goods cartons are handled. Furthermore. when the illled cartons are to be wrapped in an outer wrapper by automatic machinery the cover will not spring open during the wrapping operations. The carton is thus particularly adapted for making packages which are required to be completely wrapped with an outer protective wrapper as for example in the case of packaging frozen foods and the like.

' To assure that the walls of the tray portion 9 are rigidly retained in their fully set-up position preparatory to filling with a commodity and will not collapse or fold back once they are set up, deep depressions or wells 35 (see Figure 3) are automatically formed when the trayportion line l5, as shown in Figure 3, and the ends of ridges 31 are connected automatically at the same time with the interrupted ends of score other specinc forms without departing from the spirit or essential attributes thereof. -It is desired' that the present preferred embodiment be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to the aforegoing description to indicate the scope of the invention.

I claim:

1. A collapsible carton formed from an integral blank comprising bottom, front and rear walls, side walls connected to 'said bottom wall by scored lines interrupted at selected areas, [a glue ilap hingedly connected to each side wall and adhered to said rear walL] a retaining ap hingedly lines II by extending creases which form when lthe carton is set up. The i'lbers of the carton in which the tip portions 22 of the retaining flap I 2| slide and are firmly and frictionally engaged. These results are best obtained when the carton i`s run through the press with the grain or direction of fiber disposition'of the carton blank is along the line designated A-A as shown in Figure 1. Embossed ridges 28 and 38' in the bottom wall Iii immediately adjacent each well I6 serve as auxiliary or safety catches to engage the tip portions 22 in event they should accidentally slip out of depressions 35. 'Ihe embossed ridges 81. It and I8 are each disposed at an acute angle with respect to its adjacent score line Il. When the carton is set-up the tip portions 22 of the Beers-'style aps 2| snap into the wells I6 and thus maintain the carton in a substantially rigid,

locked condition. In the event a ap 2| ldis-v f engages itself from a well 25, the auxiliary embossed ridge or ridges 28 and Il' will catch the bottom edge 22 of the flap 2| and prevent further movement of the flap and hence collapse of the carton.

connected to each end of said front walll diagonally disposed crease lines intersecting each end of said side walls, said crease lines radiating from each corner of said bottom wall and forming triangular segments, portions of said retaining naps overlapped and adhered to the inner faces of adjacent triangular segments to thereby provide free. unadhered, retaining flap portions, the lower edges of which are slideable over said bottom wall, a ridge formed in said bottom wall adjacent each of said selected areas extending above the plane of the bottom wall and substantially parallel to the side walls and spaced therefrom whereby a well is formed for retaining the lower edges of said free, unadhered,l retaining ap portions.

2. 'A collapsible carton formed from an integral blank comprising bottom, front and rear walls,

. side walls connected to said bottom wall by scored lines interrupted at selected areas, [a glue ilap hlngedly connected' to each side wall and adhered to said rear wallJ-a' retaining ilap hingedly connected to each end of said @front wall, diagonally disposed crease lines intersecting each end of said side walls, said crease lines radiating from each corner of said bottom wall and forming triangular segments, portions of'said retaining flaps overlapping and adhered to the inner faces of adjacent triangular segments to thereby provide free. unadhered, retaining ilap portions, the lower edges of which are slideable over said bottom wall, a ridge for-med in said bottom wall adjacent each of said selected areas and substantially parallel to the side walls and spaced, therefrom connecting with said interrupted score lines, and a crease in the side walls connecting :aid interrupted'scored lines adjacent said selected areas vwhereby a well is formed for retaining the lower edges of said free, unadhered, retaining flap portions. f

3. A collapsible carton formed from an integral blank of paper, cardboard or the like comprising bottom, front and rear walls-side walls connected to said bottom wall by scored lines interrupted at selected areas, said scored lines being at right angles with respect to the grain r.of said blank, [a glue ap hingedly connected to'each side wall and adhered to said rear wal1.] a retaining nap hingedly connected to each end of said front wall, diagonally disposed crease lines intersecting each end of said sidewalls and forming triangular segments. portions of `said retaining naps overlapped and adhered to the inner faces of -adjacent triangular segments to thereby provide free, unadhered, retaining ilap portions, the lower edges of which are slideable over said bottom wall. wells disposed in said bottom wall at said selected areas for retaining rthe lower edges of said free, unadhered, retaining tlap portions. a. ridge in said bottom wall adjacent each well and a pair of spaced embossed auxiliary ridges positioned at an acute angle with respect to each side wall spaced from each of said ridges.` y

4. A collapsible carton formed from an integral blank of paper, cardboard, or the like comprising bottom, front and rear walls, side walls connected to said bottom wall by scored lines interrupted at selected areas, said scored lines being at right angles with respect to the grain of said blank, a glue flap hingedly connected to each side wall and adhered to said rear wall. a retaining flap hingedly connected to each end of said front wall. diagonally disposed crease lines intersecting each end of said side walls. said crease lines radiating from each corner of said bottom wall and forming triangular segments, portions of said retaining aps overlapped and adhered to the inner faces of adjacent triangular segments to thereby provide free. unadhered, retaining ilapportions. the lower edges of which are slideable over said bottom wall, wells disposed in said bottom wall at said selected areas for retaining the lower edges of said free, unadhered, retaining ilap portions, a ridge formed in said bottom wall adjacent each well, a crease in each side wall adjacent each well connecting said interrupted score lines and a plurality of parallel, spaced, embossed ridges positioned at an acute angle with respect to diating from each corner of said bottom wall and forming triangular segments, portions of said retaining ilaps overlapped and adhered to the inner faces of adjacent triangular segments tethereby provide free. unadhered, retaining flap porv tions, the lower edges of which are slideable over each side wall. said embossed ridges being spaced from said formed ridges.

5. An integral blank of paper, cardboard or the like for forming a collapsible carton comprising bottom. front and rear walls, side walls connected to said bottom wal] by scored lines interrupted at selected lengths. said scored lines being positioned at right angles with respect to the grain of said blank. a. glue nap hingedly connected to each side wall and adhered to said rear wall, a retaining said bottom wall, wells formed automatically in,

said bottom wall at said selected areas when the carton is set 'up for retaining the lower edges of said free. unadhered, retaining ilap portions, a ridge in said bottom wall adjacent each well connecting with the interrupted ends of the said score line connecting the said bottom and side walls and 'an embossed ridge positioned at an acute angle with respect to each side wall spaced from each of said iirst mentioned ridges. v

, MANVILLE THOMAS.

REFERENCES CITE!) The following references are of record in the me of this patent or the original patent:

UNITED STATES PATENTS Number Name Date 1,032,645 Beers July 16. 1912 1.421.526v Miller July 4. 1922 1.437.151 Riley Nov. 28, 1922 1.938.191 Rumpel Dec. 29. 1931 FOREIGN PATENTS Number Country` Date 409.665 Great Britain Apr. 30, 1934 613,214 France Mar. 22, 1926 

